DE1274635B - UEbertragungssystem fuer Impulssignale in einem vorgeschriebenen UEbertragungsband - Google Patents

UEbertragungssystem fuer Impulssignale in einem vorgeschriebenen UEbertragungsband

Info

Publication number
DE1274635B
DE1274635B DET26844A DET0026844A DE1274635B DE 1274635 B DE1274635 B DE 1274635B DE T26844 A DET26844 A DE T26844A DE T0026844 A DET0026844 A DE T0026844A DE 1274635 B DE1274635 B DE 1274635B
Authority
DE
Germany
Prior art keywords
frequency
signals
transmission system
carrier
pulse signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DET26844A
Other languages
German (de)
English (en)
Inventor
Jacques Lucien Daguet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Publication of DE1274635B publication Critical patent/DE1274635B/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/68—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for wholly or partially suppressing the carrier or one side band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H04L25/4923—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using ternary codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Dc Digital Transmission (AREA)
DET26844A 1963-08-23 1964-08-19 UEbertragungssystem fuer Impulssignale in einem vorgeschriebenen UEbertragungsband Withdrawn DE1274635B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR945536A FR1381314A (fr) 1963-08-23 1963-08-23 Procédés de synchronisation pour transmettre des signaux digitaux à travers des dispositifs de transmission non synchrone

Publications (1)

Publication Number Publication Date
DE1274635B true DE1274635B (de) 1968-08-08

Family

ID=8811086

Family Applications (1)

Application Number Title Priority Date Filing Date
DET26844A Withdrawn DE1274635B (de) 1963-08-23 1964-08-19 UEbertragungssystem fuer Impulssignale in einem vorgeschriebenen UEbertragungsband

Country Status (8)

Country Link
US (1) US3378770A (fr)
BE (1) BE651389A (fr)
CH (1) CH426928A (fr)
DE (1) DE1274635B (fr)
FR (1) FR1381314A (fr)
GB (1) GB1024095A (fr)
NL (1) NL142852B (fr)
SE (1) SE318599B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522537A (en) * 1966-07-25 1970-08-04 Western Union Telegraph Co Vestigial sideband transmission system having two channels in quadrature
US4103234A (en) * 1967-11-24 1978-07-25 General Dynamics Corp. System for transmission storage and/or multiplexing of information
NL6800093A (fr) * 1968-01-03 1969-07-07
US3962639A (en) * 1973-06-11 1976-06-08 The United States Of America As Represented By The Secretary Of The Navy System for reducing radio communication frequency bandwidth and increasing number of channels available
FR2309089A1 (fr) * 1975-04-25 1976-11-19 Ibm France Procede pour synchroniser l'horloge du recepteur d'un systeme de transmission de donnees et dispositif pour mettre en oeuvre le procede
GB1561643A (en) * 1975-08-05 1980-02-27 Marconi Co Ltd Phaseshift-keying modulators
FR2445079A1 (fr) * 1978-12-20 1980-07-18 Ibm France Procede et dispositif pour detecter une sequence pseudo-aleatoire de changements de phase de 0o et 180o de la porteuse dans un recepteur de donnees
FR2445078A1 (fr) * 1978-12-20 1980-07-18 Ibm France Procede et dispositif pour detecter une sequence pseudo-aleatoire de deux symboles dans un recepteur de donnees utilisant une modulation a double bande laterale-porteuses en quadrature
SG47496A1 (en) * 1991-03-13 1998-04-17 Motorola Inc Method and apparatus for accommodating a variable number of communication channels in a spread spectrum communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL122464C (fr) * 1962-02-19
NL292264A (fr) * 1962-05-07
US3289082A (en) * 1963-05-31 1966-11-29 Gen Electric Phase shift data transmission system with phase-coherent data recovery

Also Published As

Publication number Publication date
CH426928A (de) 1966-12-31
GB1024095A (en) 1966-03-30
NL6409439A (fr) 1965-02-24
BE651389A (fr) 1965-02-04
US3378770A (en) 1968-04-16
SE318599B (fr) 1969-12-15
NL142852B (nl) 1974-07-15
FR1381314A (fr) 1964-12-14

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee